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A 6.5 mg sample of an organic compound with a van't Hoff factor of 2 is dissolved in 25.0 mL of water at 45 degrees C on the fixed volume side of an osmometer. The solvent side is filled with distilled water. After the system comes to a steady-state, the osmometer records an osmotic pressure of 306 matm. What is the Molarity of the solution containing the organic compound?
The water is brought to the vapor state at 300 degrees celsius and 1,500 kPa, where its internal energy is 2,784.4 kJ/kg and its specific volume is 169.7 cm3/g. Calculate delta U and delta H for the process.
0.65 of sodium hydroxide (NaOH) pellets are dissolved in water to make 2.5L of solution. What is the pH of this solution
Calculate the Ki for a competitive inhibitor whose concentration is 6.5x10-5M that increases the Km of the substrate
Question- A 0.610 g sample of aspirin prepared in the laboratory is dissolved in 100% ethanol, diluted with water and tite ayes to the phenolphthalein endpoint with 25.0ml of a 0.135 m naoh solution
Calculate the pH of a buffer made by mixing 50.0mL of 0.10M acetic acid (HC2H3O2) with 50.0mL of 0.10M sodium acetate (NaC2H3O2)
Carbon monoxide and oxygen both can bind to hemoglobin, an important molecule for oxygen transfer in our body. In addition, they compete in binding to this same molecule
if 18.9 of 0.800 solution are needed to neutralize 5.00 of a household ammonia solution what is the molar concentration
Calculate q, and determine whether heat is absorbed or released when a system does work on the surroundings equal to 64 J and ?U = ?213 J.
The temperature rises from 19.25C to 22.17C. If the heat capacityof the calorimeter is 98.6J/C, calculate the enthalpy change forthe above reaction on a molar basis
The heat of vaporization of benzene, C6H6 , is 30.8 kJ/mol at its boiling point of 80.1 °C. How much heat is required to vaporize 128 g benzene at its boiling point ?
Question- A solution of sodium sulfate is added dropwise from a buret to a solution that contains 0.10 M lead (II) nitrate and 0.10 M radium nitrate (neglect volume changes).
Compute the pH of (a) a solution that is 0.060M in potassium propionate (C2H5COOK or KC3H5O2) and 0.085M in proprionic acid (C2H5COOH or HC3H5O2); (b) a solution that is 0.075M in trimethylamine, (CH3)3N, and 0.10M in trimethylammonium chloride, (..
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